Gravity-feed boiler-washing system



5. OTIS GRAVITY FEED vBOILEIR WASHING SYSTEM Aug. 31, 1926.

Filed Oct. 12 1922 16 has its exhaust pipe 21 tapped into the vapor pipe 5, so that not only are the heat units from the exhaust conserved in the condenser v6, but exhaust steam is constantly meeting the return flow Water from pipe 15 in the condenser 6 and replacing heat that may have been lost in circulation.

Obviously, While the systemas a Whole is advantageous in that it permits a sub-surface location of the separator 3 Witbontrinterfering with the delivery of the volatiles of the elevated condenser, a number of the advantages incident to the system could be realized by some otherv location of the separator 3.

I claim:

l. In a bloiwofltl apparatus for boilers, a bloyvoff kline adapted to be connected With a boiler and receive volatiles, liquid, and precipitate therefrom, a separator located at a relatively low level connected to receive all suchblown off products from said line, a boiler-supplying Water line` a tank connected to said boiler-supply line located at a relatively high level which adapts it to deliver Water to the boiler by gravity, a condenser at a klevel which adapts it to deliver iva-ter of condensation to -the tank by gravity, and a vapor pipe leading from the separator upward to said condenser.

2. In ajbloivoif apparatus for boilers, a blowofiI line adapted to be connected with a boiler, a separator receiving blown olf products through said line and in position to drain the boiler by gravity, a boiler supplying line, a tank in position to feed said supplying'line by gravity, a vapor pipe leading from said separator, and a condenser receiving vapor from said vapor pipe and located to deliver to said tank by gravity.

3. In a blowoif apparatus for boilers, a blowotf line adapted to be connected with a boiler, a separato-r receiving blown ofi' products through said line and in position to drain the boiler by gravity, a boiler supplying line, a tank in position to feed said supplying line by gravity, a vapor pipe leading from said separator, a condenser receiving vapor from said vapor pipe and located to deliver to said tankby gravity, a low capacity circulating line connecting the end of said boiler supplying line with said tank, and a pump for forcing Water through Said circulating line.

4. In a blovvoif apparatus for boilers, va bloivoif line adapted to be connected with a boiler, a separator receiving blown off products through said line and in position to drain the boiler by gravity, a boiler supplying line, a tank in position to feed said supplying .line by gravity, a vapor pipe leading from said Separator, a condenser receiving vapor from said vapor pipe and located to deliver to said tank bv gravity, a low capacity circulating line connecting the end of said boiler supplying `line with said condenser, a steam pump adapted to force Water through said circulating line to said condenser, and means delivering exhaust steam fromk said pump to said vapor pipe.

vSigned at Chicago, Illinois, this 9 day of Oct0ber,p1922.

SPENCER orrs. 

